and again, president obama tonight calling harry reid, nancy pelosi to make sure that they both signed off on this deal, which they have. so now we have the vice president who is just arriving at the hill. he is going to sit down with the democratic caucus, sell this deal to the caucus, answer their questions, answer their concerns. but, again, the broad outlines of the deal have been agreed upon by all the major players who are involved in this. of course, vice president biden has been playing a critical role in these negotiations, really the entire time. but especially since saturday when leader mcconnell reached out to him and asked him to get more engaged, which he did. and that is really when we saw this ball move forward. and now it appears inching closer by the hour to the end game. so, again, president obama reaching out to key leaders on the hill, making sure that they agree with this deal. and it appears at this hour that they do. and vice president biden now going to sell to it the caucus. milissa? >> all right, kristen welker, stand by for us, if you please. let's go to nbc